In a labor strike, union workers stop working in order to pressure management to meet their demands. A union federation or an entire industry may coordinate a larger strike to press the same demands for all of its members. A wildcat strike is an unannounced strike that may be illegal. A minority labor union or a group of unhappy workers might undertake such a strike, or it may come about because a sudden action by management has upset the workers so much that they decide to walk off the job. A general strike is organized by national or regional coalition of labor unions and labor federations. It aims to stop work all across the country to achieve a political goal. In January 1947, the Occupation prohibited a planned national general strike. Click on Charts, below, for more information about labor disputes in Japan.